package org.example;
public class Rational {
    int numerator = 1;
    int denominator = 1;
    void setNumerator(int a){
        int c=f(Math.abs(a),denominator);
        numerator =a/c;
        denominator = denominator/c;
        if(numerator<0&&denominator<0){
            numerator = -numerator;
            denominator = -denominator;
        }
    }
    void setDenominator(int b){
        int c=f(numerator,Math.abs(b));
        numerator = numerator/c;
        denominator = b/c;
        if(numerator<0&&denominator<0){
            numerator = -numerator;
            denominator = -denominator;
        }
    }
    int getNumerator(){
        return numerator;
    }
    int getDenominator(){
        return  denominator;
    }
    int f(int a,int b){
        if(a==0)return 1;
        if(a<b){
            int c = a;
            a = b;
            b = c;
        }
        int r=a%b;
        while (r!=0){
            a=b;
            b=r;
            r=a%b;
        }
        return b;
    }
    Rational add(Rational r){
        int a = r.getNumerator();
        int b = r.getDenominator();
        int newNumerator = numerator*b+denominator*a;
        int newDenominator = denominator*b;
        Rational result = new Rational();
        result.setNumerator(newNumerator);
        result.setDenominator(newDenominator);
        return result;
    }
    Rational sub(Rational r){
        int a = r.getNumerator();
        int b = r.getDenominator();
        int newNumerator = numerator*b-denominator*a;
        int newDenominator = denominator*b;
        Rational result = new Rational();
        result.setNumerator(newNumerator);
        result.setDenominator(newDenominator);
        return result;
    }
    Rational muti(Rational r){
        int a = r.getNumerator();
        int b = r.getDenominator();
        int newNumerator = numerator*a;
        int newDenominator = denominator*b;
        Rational result = new Rational();
        result.setNumerator(newNumerator);
        result.setDenominator(newDenominator);
        return result;
    }
    Rational div(Rational r){
        int a = r.getNumerator();
        int b = r.getDenominator();
        int newNumerator = numerator*b;
        int newDenominator = denominator*b;
        Rational result = new Rational();
        result.setNumerator(newNumerator);
        result.setDenominator(newDenominator);
        return result;
    }
}